<template>
  <div class="todo-header">
        <input 
        type="text"
         placeholder="请输入你的任务名称，按回车键确认"
         @keyup.enter="newHandle"
         />
      </div>
</template>

<script>
import {v4 as uuidv4} from 'uuid'
export default {
name:'Header',
props:['addNumHandle'],
methods: {
    newHandle(e){
        if(!e.target.value.trim()) return alert('请输入有效内容')
      const  newtodo={id:uuidv4(),thing:e.target.value,done:false}
    //   父子传值
     this. addNumHandle(newtodo)

    // 清空输入框
    e.target.value=''
    }
},
}
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}
</style>